Hornady's Custom Grad New Dimension dies are created from select steel that's heat-treated to ensure the durability needed for a lifetime of reloading. Hornady guarantees they'll never wear out or break under normal use. All dies include the popular double-flat Hornady die lock rings installed and a custom plastic box. Hornady dies are grouped in three series for pricing - die construction and quality is equal in each series. Full Length Dies feature Hornady's Zip Spindle, which holds the decap spindle in a lightly threaded collet to make it easy to adjust and center exactly in the die. The decap pins are headed steel, and strong enough to decap crimped military cases. The expander balls are long, smooth, threaded, and elliptical in shape. This reduces or eliminates case neck stretching and keeps expander from pulling loose. Cases may be necked up in these dies without a separate expander.